Abstract: A forwarding table generation method is provided. The method includes: determining, by a forwarding device, a first timeslot set, where the first timeslot set includes multiple timeslots during which the forwarding device sends, to a first device by using a first flexible Ethernet group, multiple encoded data blocks generated by a physical coding sublayer; determining, by the forwarding device, a second timeslot set, where the second timeslot set includes multiple timeslots during which the forwarding device receives, by using a second FlexE group, the multiple encoded data blocks sent by a second device; and generating, by the forwarding device, a forwarding table, where the forwarding table includes a mapping relationship between the second FlexE group and the multiple timeslots included in the second timeslot set, and between the first FlexE group and the multiple timeslots included in the first timeslot set.

Abstract: A co-packaged, multiplane network includes: an enclosure; a portion of a first network plane disposed within the enclosure and comprising a first plurality of interconnected switches; a portion of a second network plane disposed within the enclosure and comprising a second plurality of interconnected switches, the second network plane being independent of the first network plane and having the same topology as the first network plane; and a plurality of connectors, each connector being communicatively coupled to a respective port of each of the first plurality of interconnected switches and the second plurality of interconnected switches.

Abstract: An apparatus for network switching may include a plurality of input ports, a plurality of output ports, and a subset of pre-configured interconnection patterns including some but not all of the possible interconnection patterns between the input ports and the output ports. The apparatus may be communicatively coupled to a network via the input ports and/or the output ports. The apparatus may be configured to switch to a first interconnection pattern and a second interconnection pattern from the subset of pre-configured interconnection patterns. The first interconnection pattern and the second interconnection pattern may each provide a set of connections between the input ports and the output ports. At least one signal between the input ports and the output ports may be transmitted via the first interconnection pattern and/or the second interconnection pattern. Related methods are also provided.

Abstract: A control apparatus for registering a connection state between component devices constituting a distributed optical transmission apparatus in a database includes: a device setting unit which performs setting such that light is output from a component device that is a connection source; and a registration processing unit which acquires a light reception level of each port in each component device on a side receiving the light, identifies a port having a light reception level higher than light reception levels of other ports, and registers a component device having the identified port and the identified port in the database as a connection destination of the component device that is the connection source.

Abstract: Systems and methods for utilizing backup paths to restore service in a network are provided. A method, according to one implementation, includes obtaining a route list as defined by a user, the route list including a plurality of explicitly-configured backup routes for restoring service between a source node and a destination node in a network when a working route is unavailable. The method also includes receiving input designating one or more of the explicitly-configured backup routes as one or more last-resort routes. In response to determining that the working route is unavailable and that the plurality of explicitly-configured backup routes, excluding the one or more last-resort routes, are unavailable, the method includes automatically computing one or more implicitly-computed backup routes.

Abstract: A transmission network system, data switching and transmission method, apparatus and equipment are provided. The transmission network system includes: a flexible Ethernet group located at a physical layer; at least one flexible Ethernet client carried over the flexible Ethernet group; a flexible Ethernet time slot control module, configured to map, according to a block sequence, service data coming from an upper layer onto the flexible Ethernet group, and recover, from a block sequence received by the flexible Ethernet group, corresponding service data; a flexible Ethernet switching module, configured to perform switching in a physical layer and transmission of service data according to the block sequence.

Abstract: If a configuration is employed in which modulation schemes used for an optical communication system can be switched depending on transmission conditions, the power consumption increases and the control becomes complex; therefore, an optical transmitter according to an exemplary aspect of the present invention includes an encoding means for encoding digital signals to be transmitted under a predetermined transmission condition over an optical carrier wave by using one of a plurality of encoding methods; an encoding control means for selecting a predetermined encoding method corresponding to the predetermined transmission condition from among the plurality of encoding methods and causing the encoding means to operate in accordance with the predetermined encoding method; a mapping means for mapping output bit signals output from the encoding means to modulation symbols; and an optical modulation means for modulating the optical carrier wave based on symbol signals output from the mapping means.

Abstract: Techniques are presented herein for load-balancing a sequence of packets over multiple network paths on a per-packet basis. In one example, a first network node assigns sequence numbers to a sequence of packets and load-balances the sequence of packets on a per-packet basis over multiple network paths of a network to a second network node. The second network node buffers received packets that are received over the multiple network paths of the network from the first network node and re-orders the received packets according to sequence numbers of the received packets.

Abstract: A method for allocating wireless resources based on sensitivity to interference provides a base station controller which, within an area of overlap of adjacent wireless cells, determines a set of neighboring cell pairs from a plurality of cells. The base station controller sorts the set of neighboring cell pairs according to the number of inner-pair interfered user equipment devices of each neighboring cell pair where inner-pair interfered user equipment devices are user equipment devices located in coverage areas of the neighboring cell pair and allocates resource blocks for each neighboring cell pair sequentially based on the sorted set. An apparatus employing the method is also disclosed.

Abstract: A system, method, and apparatus enabling synchronous and asynchronous data sources to be demapped from an oFrame container using a generic mapping system.

Abstract: An optical line terminal is provided with: an absorption unit that acquires first information of a type and a format that are dependent on a communication scheme and that converts the acquired first information into second information of a type and a format that are common to mutually different communication schemes; and a bandwidth allocation unit that determines bandwidth allocation of an upstream signal allocated to an optical network unit on the basis of the second information.

Abstract: An optical signal processing device is described herein for reducing electric wirings in an optical switch or an optical filter realized using an optical waveguide. The optical signal processing device includes an optical waveguide formed on a substrate. In the optical signal processing device, the optical waveguide includes at least one input port and at least one output port, a plurality of driven elements are provided including a phase shifter that produces a phase shift to an optical signal from the input port, each of the driven elements includes at least two control terminals, control wirings are provided to have control signals being time-division synchronized applied between the two control terminals, and the control wiring for accessing the driven element is shared by the plurality of driven elements.

Abstract: An optical line terminal (OLT) device virtualization method and a related device, the method including creating a plurality of virtual OLT systems on an OLT device, and determining system resources of each of the plurality of virtual OLT systems according to a preset rule. The system resources include a physical resource and a logical resource, and physical resources and logical resources of the plurality of virtual OLT systems are different from each other.

Abstract: A ranging method for an optical network, an OLT, an ONU, and an optical network system are provided. The OLT sends a bandwidth allocation message to the ONU; an OLT receiving a response message sent by an ONU in a first sending mode, wherein the first sending mode comprises sending power and a transmission rate; and the OLT performs ranging on the ONU according to the response message.

Abstract: Disclosed is a power optical transmission route and spectrum allocation method based on an elastic optical network, including: determining a set of alternative routes among nodes of a power communication network according to power communication topology; coloring the routes for classification, determining a total number of colors allocated, and determining the coloring of the set of alternative routes according to a hop count of route nodes and the total number of colors of spectrums; proportionally classifying the spectrums into blocks according to the total number of colors allocated and the number of route classes allocated to each color; selecting an optimal solution from the set of alternative routes by comprehensively considering a switching hop count and a network-wide risk balance value, to determine a route to execute service allocation; and determining positions of spectrum blocks according to the route selected and the allocated colors, to complete spectrum allocation.

Abstract: An orchestration layer includes one or more processing devices communicatively coupled to a plurality of domains in a multi-domain network, wherein the one or more processing devices are configured to receive a request for a path, wherein the path is requested from a source in a first domain to a destination in a second domain in a multi-domain network including a plurality of domains, relay the request to each domain in the multi-domain network, and wherein each domain in the multi-domain network is configured to compute a matrix fragment and the matrix fragments from a plurality of domains are used to find the path, and provide a response with the path from the source in the first domain to the destination in the second domain.

Abstract: In the technical field of optical communication a multi-path wavelength division multiplexing light receiving component including a substrate placed at the bottom of a housing is provided. The housing and substrate form an installation chamber, and include a light emitting unit, a light de-multiplexing unit, a reflector and a light receiving unit. The light emission unit, the light de-multiplexing unit, the reflector, and the light receiving unit are located inside the installation cavity, and the light emission unit, the light de-multiplexing unit, and the reflector are fixed on the housing, and the light receiving unit is fixed on the substrate. An optical module includes the multiplex wavelength division multiplexing optical receiving component. The length of the light receiving unit is shortened by reflecting an optical signal decomposed by a light de-multiplexing unit, and disposing the light receiving unit integrally below a reflector.

Abstract: An access network node is provided with: a link switching part configured to be capable of exchanging data by switching between an active link and a standby link established with an adjacent node; a data identification part configured to identify type of data to be exchanged with an accommodated terminal; and a controller configured to select, from between the active link and the standby link, a link to be used in exchanging data with the accommodated terminal, based on the data type.

Abstract: Disclosed is a distributed antenna system (DAS). The DAS includes a DAS controller, which is an OpenFlow controller, and one or more DAS units in order to dynamically control a traffic transmission policy of the DAS units using an OpenFlow protocol, wherein the DAS controller generates and changes a traffic transmission policy by reflecting a traffic transmission policy change request by operator manipulation or a software-defined network supporting application and a need for changing of the traffic transmission policy according to a status of the DAS unit and a status of a port, and the DAS unit transmits received traffic to a destination according to the policy.

Abstract: An embodiment of a segmented directional torus network on a chip (NOC) is disclosed. The provision of shortcut routers within directional torus rings achieves shorter ring segments, reducing message delivery latency and increasing NOC bandwidth. A shortcut router may be efficiently technology mapped into fracturable FPGA lookup tables.

Abstract: An optical line device for use in an optical line system is configured to connect to a second optical line device via a transmit fiber and a receive fiber. The optical line device includes a transmitter connected to the transmit fiber via an output port of the optical line device, wherein the transmitter is configured to transmit a polarization probe signal at a wavelength outside of a band of wavelengths used for traffic-bearing channels in the optical line signal, to a second polarimeter receiver at the second optical line device; and a polarimeter receiver connected to the receive fiber via an input port of the optical line device, wherein the polarimeter receiver is configured to receive a second polarization probe signal from a second transmitter transmitted from the second optical line device and to derive a measurement of SOP on the receive fiber based on the second polarization probe signal.

Abstract: This optical path setting device comprises: a transmission characteristic calculating means for calculating an inter-endpoint transmission characteristic that is a characteristic for transmission between endpoints of an optical path accommodating traffic in a plurality of optical communication systems; a required wavelength bandwidth determining means for determining a required wavelength bandwidth that is a wavelength bandwidth meeting an arrival performance of the optical path on the basis of the inter-endpoint transmission characteristic; and an accommodating wavelength band determining means for determining, as an accommodating wavelength band for accommodating the optical path, a common wavelength band that is a wavelength band where an optical path having the required wavelength bandwidth can be allocated, and that is common to the plurality of optical communication systems.

Abstract: Systems for differentially detecting light (e.g., in a flow stream) are described. Light detection systems according to certain embodiments include a plurality of photodetectors, an amplifier component and an electronic switch component having a plurality of switches in electrical communication with the plurality of photodetectors and the amplifier component. Systems and methods for differentially detecting light and optimizing the measurement of light emitted by a sample (e.g., in a flow stream) are also described. Kits having a photodetector array, an amplifier component and an electronic switch component are also provided.

Abstract: This application provides an encoding method, comprising: encoding first data to generate a first encoded sequence; encoding second data to generate a second encoded sequence, where a quantity of bits comprised in the first data is greater than a quantity of bits comprised in the second data, and a quantity of bits comprised in the first encoded sequence is equal to a quantity of bits comprised in the second encoded sequence; generating a symbol sequence by performing a PAM-4 modulation on an input signal, the first encoded sequence corresponds to a high bit of the input signal, and the second encoded sequence corresponds to a low bit of the input signal; and sending the symbol sequence. The method helps reduce a quantity of redundant bits, helps improve a code rate, and can reduce redundant information carried in a modulated symbol sequence.

Abstract: A method includes: determining a configuration of one or more networked hardware components; determining a usage level associated with one or more of the networked hardware components; determining a functional category of one or more of the networked hardware components based at least in part on the configuration of the one or more networked hardware components and the usage level associated with the one or more networked hardware components; and one or more of: outputting a suggested configuration of one or more of the networked hardware components based on the determined functional category of the one or more networked hardware components; and configuring of one or more of the networked hardware components based on the determined functional category of the one or more networked hardware components. Corresponding systems and computer program products are also disclosed.

Abstract: A communication terminal based on free space optical communication, a communication device, and a communication system are provided. The communication system includes a communication terminal, communication devices, and a master control device. The first communication device includes a light emitting unit configured to transmit an optical signal and a second switching control unit configured to establish a connection with the communication terminal that has received the optical signal. The communication terminal includes a light receiving unit configured to receive the optical signal transmitted by the first communication device and a first switching control unit configured to set the first communication device as a switching destination according to the optical signal.

Abstract: Implementations described and claimed herein provide systems and methods for a configurable optical peering fabric to dynamically create a connection between participant sites without any physical site limitations or necessity of specialized client and network provider equipment being located within such a facility. Client sites to a network may connect to a configurable switching element to be interconnected to other client sites in response to a request to connect the first client site with a second site, also connected to network, via the switching element. A request may trigger verification of the requested and, upon validation, transmission of an instruction to the switching element to enable the cross connect within the switching element. The first site and the second site may thus be interconnected via the switching element in response to the request, without the need to co-locate equipment or to manually install a jumper between client equipment.

Abstract: In one embodiment, a device configures a plurality of subinterfaces for each of a plurality of physical ports of a software defined network (SDN). The device allocates a fixed amount of bandwidth to each of the subinterfaces. The device forms a plurality of midlays for the SDN by assigning subsets of the plurality of subinterfaces to each of the midlays. The device assigns a network slice to one or more of the midlays, based on a bandwidth requirement of the network slice.

Abstract: Systems, methods, and non-computer-readable storage media for repairing a Network Element (NE) to transport data within a network. When a NE on the network encounters an error, such as a port not receiving data, that NE will issue an alarm. Unlike previous mechanisms for resolving the alarm, systems configured according to this disclosure provide for an automatic mechanism to repair the alarm. In some instances, this can mean automatically deploying resources to re-connect the NE according to a network plan. In other instances this can mean verifying the status of the NE matches a planned status (i.e., that the loss of signal, and the subsequent alarm, were planned for). If neither of these actions resolves the problems of the NE, the system can issue a notification for a network engineer to perform maintenance on the NE.

Abstract: Embodiments of the invention describe flexible (i.e., elastic) data center architectures capable of meeting exascale, while maintaining low latency and using reasonable sizes of electronic packet switches, through the use of optical circuit switches such as optical time, wavelength, waveband and space circuit switching technologies. This flexible architecture enables the reconfigurability of the interconnectivity of servers and storage devices within a data center to respond to the number, size, type and duration of the various applications being requested at any given point in time.

Abstract: A method, system, and apparatus for transmitting information over an coherent optical link comprising enabling synchronous and asynchronous data sources to be mapped together into a single payload using a generic mapping system which performs decoupling of a clock from each data source, and mapping data from each data source into a tributary of an oFrame.

Abstract: A communication network includes a coherent optics transmitter, a coherent optics receiver, an optical transport medium operably coupling the coherent optics transmitter to the coherent optics receiver, and a coherent optics interface. The coherent optics interface includes a lineside interface portion, a clientside interface portion, and a control interface portion.

Abstract: Various leaf switch modules including optical network interfaces, electrical network interfaces and packet processors are provided. Some of the leaf switch modules as described herein are adapted for upward transmission of signals from external client devices to an electrical fabric, and include O/E converters; other leaf switch modules are adapted for downward transmission of signals from an electrical fabric to external client devices, and include E/O converters. A third type of leaf switch as described herein is adapted for both upward and downward transmission of signals, and includes both types of converter. In addition to the leaf switch modules themselves, an optoelectronic switch containing a plurality of those leaf switches is also described.

Abstract: According to various aspects of the present disclosure, an apparatus is provided. In an aspect, the apparatus includes an optical transceiver having a first port, a second port and an optical switch coupled to the first port and the second port. The optical switch is switchable between a unidirectional port operation mode and a bidirectional port operation mode. When the optical switch is in the unidirectional port operation mode, the first port is configured to send a first optical signal, and the second port configured to receive a second optical signal. When the optical switch is in the bidirectional port operation mode, the first port configured to send the first optical signal and receive the second optical signal, and the second port configured to receive a third optical signal and not send the first signal.

Abstract: A Multi-Chip Module (MCM) includes a substrate and a switch controller on the substrate. An optical module on the substrate includes at least one optical crosspoint switch for selectively routing optical signals received by the optical module out of the MCM without the MCM converting the optical signals into electrical signals for processing data from the optical signals by the switch controller. According to another aspect, at least one memory on the substrate is electrically connected to the switch controller by a parallel bus. In another aspect, the MCM includes a plurality of input optical paths for receiving optical signals from outside the MCM, a plurality of output optical paths for transmitting optical signals from the MCM, and a plurality of optical crosspoint switches each connecting an input optical path to an output optical path to selectively route optical signals.

Abstract: An optical reshuffler system for implementing a flat, highly connected optical network for data center and High-Performance Computing applications includes a first optical reshuffler having a plurality of ports each configured to optically connect to a corresponding switch and having internal connectivity which optically connect each of the plurality of ports internal to the first optical reshuffler such that each port connects to one other port for switch interconnection, wherein the internal connectivity in the first optical reshuffler and ports follow rules by which subtending switches are added to corresponding ports provide a topology for the flat, highly connected optical network.

Abstract: An overhead processing technology in an optical network and an overheads processing method, including: generating, by a network device, an optical supervisory channel (OSC) frame, where the OSC frame includes a plurality of overhead code block units, each of the plurality of overhead code block units bears an overhead of one type, the OSC frame carries overhead identification information, the overhead identification information is used to identify overhead types of overheads born by the plurality of overhead code block units, and overheads include an optical transmission section overhead, an optical multiplex section overhead, and an optical tributary signal assembly overhead; and sending, by the network device, the OSC frame.

Abstract: Disclosed is a distributed antenna system (DAS). The DAS includes a DAS controller, which is an OpenFlow controller, and one or more DAS units in order to dynamically control a traffic transmission policy of the DAS units using an OpenFlow protocol, wherein the DAS controller generates and changes a traffic transmission policy by reflecting a traffic transmission policy change request by operator manipulation or a software-defined network supporting application and a need for changing of the traffic transmission policy according to a status of the DAS unit and a status of a port, and the DAS unit transmits received traffic to a destination according to the policy.

Abstract: Embodiments of the invention describe flexible (i.e., elastic) data center architectures capable of meeting exascale, while maintaining low latency and using reasonable sizes of electronic packet switches, through the use of optical circuit switches such as optical time, wavelength, waveband and space circuit switching technologies. This flexible architecture enables the reconfigurability of the interconnectivity of servers and storage devices within a data center to respond to the number, size, type and duration of the various applications being requested at any given point in time.

Abstract: A format of an Infrared (IR) transmission from an IR remote is matched to a corresponding IR protocol format for a starting sequence associated with the transmission. Next, a format of a payload that follows the starting sequence in the transmission is matched to a payload format associated with the matched protocol format. Assuming both the starting sequence and the payload formats match, the transmission is relayed and/or replayed over an IR re-transmitter situated in proximity to an IR-enabled device associated with the IR remote, and the IR-enabled device processes a command represented in the payload of the transmission. When either the starting sequence fails to match a supported IR protocol or the payload format fails to match a given supported IR protocol, the transmission is ignored and discarded as unverified.

Abstract: In one embodiment, a distributed antenna system comprises: a master unit configured to receive a base station downlink radio frequency signal and to transmit a base station uplink radio frequency signal; and at least one remote antenna unit that is communicatively coupled to the master unit using at least one cable, the remote antenna unit configured to radiate a remote downlink radio frequency signal and to receive a remote uplink radio frequency signal; wherein the master unit comprises: a controller; and a respective interface to couple the controller to a first operator control panel; wherein the at least one remote antenna unit comprises: a controller; and a respective interface to couple the controller to a second operator control panel; wherein the master unit controller and the remote unit controller synchronize at least some information between the first and second operator control panels over the at least one cable.

Abstract: This application discloses a communication method, an optical line terminal, and an optical network unit in a passive optical network system. The PON system includes an OLT and at least one ONU, and the method includes: receiving, by the OLT, a first message that is sent by a first ONU in the at least one ONU through a first upstream channel; determining a first round trip time (RTT) of the first ONU based on a receiving moment of the first message; determining a time window based on the first RTT; sending first indication information to the first ONU through a downstream channel, where the first indication information includes the time window; receiving a second message that is sent by the first ONU through a second upstream channel within the time window; and determining a second RTT of the first ONU based on a receiving moment of the second message.

Abstract: A computer server software system implemented on a computing device comprises a bare metal automation interface, a request processor, a scheduler, a vendor non-specific bare metal interface, and an orchestration engine. The bare metal automation interface is configured to receive requests for configuration of one or more of a plurality of servers. The request processor is configured to receive the requests from the bare metal automation interface and to forward the requests. The scheduler is configured to receive instructions from a runtime environment in which the computer server software system operates and forward the instructions. The vendor non-specific bare metal interface is configured to interface with a plurality of vendor-specific server interfaces, wherein each vendor-specific server interface communicates with a server from the specific vendor. The orchestration engine is configured to execute a workflow for the requests from the request processor and for the instructions from the scheduler.

Abstract: A flexible mapping method to map a Physical Coding Sublayer (PCS) structure from Flexible Ethernet and/or Multi Link Gearbox (MLG) to Optical Transport Network (OTN), includes receiving one or more Virtual Lanes; and mapping each of the one or more Virtual Lanes into a Tributary Slot, wherein a rate and number of the Tributary Slot(s) in OTN is set based on a rate and number of the one or more Virtual Lanes. A transport system and a flexible de-mapping method are also described. The systems and methods map the generalized MLG-style group of lanes (virtual PHYs/PMDs) into an OPUflex Tributary Slot (TS) structure, keeping PCS structures intact, and creates a single ODUflex container with a matching rate of FlexE for end-to-end flow.

Abstract: A computer implemented method of configuring an optical path includes selecting with one or more processors a wavelength for the optical path, generating with one or more processors, a first request for a first type of node in the optical path, generating with one or more processors a second request for a second type of node in the optical path, the second type of node having different data plane capabilities than the first type of node, wherein the first and second requests are generated as a function of a joint configuration model accommodating both types of nodes, and sending the first request from the one or more processors to the first type of node and the second request to the second type of node to configure the optical path.

Abstract: A method and apparatus for transporting data through a single optical fiber (SOF) the method comprising the steps of providing (S1) transmission Tx, wavelength division multiplexed, WDM, data channels and reception Rx, wavelength division multiplexed, WDM, data channels having the same frequency grid with frequency gaps between the WDM data channels; frequency shifting (S2) the Tx-WDM data channels and/or the Rx-WDM data channels to avoid spectral overlap between the Tx-WDM data channels and the Rx-WDM data channels; combining (S3) the frequency shifted Tx-WDM data channels and the frequency shifted Rx-WDM data channels; and transporting (S4) data via the combined WDM data channels through said single optical fiber (SOF) in opposite directions.

Abstract: A data center network device provides configurations where the port density can be increased by incorporating multiport transceivers within the device and the use of high density fiber connections on exterior panels of the device. The device also permits dynamically reassigning fiber connections to convert from single fiber connection paths to higher rate bonded fiber paths while at the same time making more efficient use of the fiber interconnections.

Abstract: Computer systems and methods for allocating bandwidth so that server computers can send data to a client computer without exceeding the available bandwidth between the server computers and the client computer, or the processing bandwidth or capacity of the client computer, are discussed herein.

Abstract: Systems and methods for quantum key distribution using orbital angular momentum (OAM)-modes-enabled secure multidimensional coded modulation. The quantum key distribution including symbols of a raw key across subcarriers and multiplexing the subcarriers to form an electrical carrier. Then optically modulating the electrical carrier with an electro-optical modulator using an optical signal. The optically modulated electrical carrier is then imposed on a pre-determined OAM mode using an optical OAM multiplexer, attenuated, and transmitted across a quantum channel. A receiver then receives the transmitted signal and demultiplexes it with an optical OAM demultiplexer to extract projections. The projections then undergo optical-to-electrical conversion using a coherent optical detector with an optical signal from a local oscillator. A resulting estimated electrical carrier is then demultiplexed into subcarriers.

Abstract: An optical transmission apparatus includes a wavelength converter that wavelength-converts input signal light using a nonlinear optical medium to output the converted signal light, a memory that holds first information relating to a wavelength conversion characteristic of the wavelength converter, a communication interface that receives second information relating to a second wavelength conversion characteristic of an adjacent optical transmission apparatus, and a control circuit that determines, using the first information and the second information when the second information is received, an excitation light frequency at which a gain deviation of main signal light subjected to a wavelength conversion is minimized to set the determined excitation light frequency in the wavelength converter.